Archive for the ‘Science and Edumacation’ Category
I love this:
The coolness and wow factors are there, yes. So is the idea that this sort of thing can be done so cheaply and easily. But the real gem is the look on that kid’s face. This is something he will never forget. I have to steal this idea for my kid one day.
While I find this study, in which people are fooled into arguing against previously-held opinions, interesting, I think many bloggers/tweeters are missing the critical point. On almost all issues, people are of two minds. It is rare that someone encounters an issue where they can not see the other side at all (we call those people “fanatics”). Even people who have a very strong opinion can usually see where the other side is coming from. And, on many issues, we’re kind of on the fence.
The gripping hand is that, unless someone is really passionate about an issue, they haven’t really thought through their arguments very well. They’ve mostly reacted, usually by agreeing with whomever they perceive to be their “side”. And when they do think about the issue, they tend to argue toward whatever side they have already picked.
As I say so often: human being are OK at thinking; but we’re dead awesome at rationalizing.
What the exercise does is not shift their moral compass. What it forces them to do is what we used to do in debate club and what I still try to do while writing blog posts: try to argue the other side. By trying to think of the arguments the opposition might raise, you strengthen your own arguments. And sometimes, you realize that the other side was right to begin with.
So, no, the results are not terribly surprising. But they are interesting.
As an astronomer, I’m always hit with the “what’s the practical use of this” question. My general response is, “Well, what’s the practical use of the Sistine Chapel?” Life can’t all be about practical down to earth things. There has to be beauty and art and discovery and awe. All our practicality has to be oriented toward something beyond ourselves.
But there’s also this. Sometimes just monkeying around with science produces unexpected insight. So research into jellyfish produces an AIDS treatment; screwing around with microwaves produces lasers and going to the moon produces remote sensors to monitor patients.
It’s a big universe out there and we’ve uncovered only a tiny fraction of its secrets. We should keep digging because we never know what’s going to turn up.
I’ll pop up from vacation just to headdesk over people’s discomfort over the recent revelation that cats kill a lot of little creatures.
Um, they’re cats. Cats are predators. They have an instinct to kill. That instinct is impossible to surpress and shouldn’t be suppressed. Even the most domesticated cat can never be sure that their next meal is going to show up. Killing prey, even if they abandon it, keeps their skills sharp in case they ever need them. If they didn’t have this instinct, they would have gone extinct millions of years ago.
As I said on Twitter, if you want a small furry critter without a killer instinct, get a hamster.
I have to agree with this article on how people are using their televisions wrong. It’s distressing to think that a generation of Americans may grow up not knowing how movies are supposed to look. Oh, well, I guess they’re already growing up not knowing how an action scene is supposed to be filmed.
I’m doing more long-form posting of links I care to comment on. But here’s a few I don’t have time for.
I’ve actually thought for some time that the only way to colonize Mars would be to send people there on a one-way trip. Of course, you have to face the brutal reality that those who go are very likely to die in the attempt. Mars is not where we evolved and its environment is almost certain to have unknown hazards. But the back-and-forth business is simply not going to work.
In the end, I think Heinlein was right: space will be colonized by people we decide we’d rather dump off on another planet and let survive on their own. That’s how the Western World colonized the Americas and Australia. You combine some eccentric billionaires and an opportunity to get rid of political/racial/religious undesirables and we’ll spread through the Solar System in no time.
Via the Bad Astronomer, I found this video talking about the ALMA array and the need for exploration that drives my profession.
It’s worth watching, especially because it interviews scientists from one of best institutions of higher learning in the known universe: Mr. Jefferson’s. (Of which I might happen to be a graduate). Funny thing: I started out my career in radio astronomy and intended to pursue a career in it. Now I work in the gamma-ray regime, about as far away from radio as you can get and still be on the electromagnetic spectrum. But I still love the epic scale of radio telescopes. I’ve been to Arecibo. I would dearly love to see ALMA some day.
I don’t know what annoys me more: that 21 people were burned fire walking in some confidence building bullshit; or that the organizers are blaming the burns on a lack of faith and concentration rather than a failure to either properly set or properly supervise this parlor trick.
More from Penn and Teller here.
The WaPo has an article Looking at the current drought and wondering/speculating what will happen if and when such droughts become more common due to global warming.
A lot of the hype for this is keying off a study that claims Texas’ 2011 drought was twenty times more likely because of global warming. This study has been loudly trumpeted around the punditsphere but needs to be taken with several helpings of salt water. The analysis is based on climactic modeling, a notoriously tricky discipline. It wouldn’t take much to make the 20 times go down a lot. Second, the 2011 Texas drought was an extreme event, on the tail of the probability distribution. If you shift the probability distribution just a little bit, the probability of an unlikely even shoots up dramatically. For example, if the likelihood of an event happening was one in a million and your analysis made it one in fifty thousand, that would be “20 times more likely”. But it is still an unlikely event and still at point where small assumptions can dramatically alter the results. Looking at their plots, 2011 was still an outlier. While there’s a great deal of research supporting the idea that global warming will produce a drier world (or at leas a drier USA), it’s sketchy to build policy on it.
More importantly, the warming is inevitable. Even if we accept the current models; even we stopped all greenhouse gas emission today; the planet would continue to warm for another half century. We are long past the point of prevention; we are now at the point of adaptation, something the WaPo article only brushes against.
There is hope in adaptation. The current drought has been more extensive than past droughts that caused food shortages and famine. But drought-resistant crops and better land management have prevented the catastrophe of the Dust Bowl. We have not even begun to tap the potential for adaptation. And it’s a potential we’re going to have to tap if the next century is to be as plentiful as the last.